| 1 | import { __read } from "tslib";
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| 2 | import colorUtil from '@antv/color-util';
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| 3 | // 内置的一些特殊设置
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| 4 | var preset = {
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| 5 | '#5B8FF9': true,
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| 6 | };
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| 7 | // 根据YIQ亮度判断指定颜色取反色是不是白色
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| 8 | // http://24ways.org/2010/calculating-color-contrast
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| 9 | // http://www.w3.org/TR/AERT#color-contrast
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| 10 | export var isContrastColorWhite = function (color) {
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| 11 | var rgb = colorUtil.toRGB(color).toUpperCase();
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| 12 | if (preset[rgb]) {
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| 13 | return preset[rgb];
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| 14 | }
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| 15 | var _a = __read(colorUtil.rgb2arr(rgb), 3), r = _a[0], g = _a[1], b = _a[2];
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| 16 | var isDark = (r * 299 + g * 587 + b * 114) / 1000 < 128;
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| 17 | return isDark;
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| 18 | };
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| 19 | //# sourceMappingURL=color.js.map |
| \ | No newline at end of file |